18683532 has 72 divisors (see below), whose sum is σ = 54442752. Its totient is φ = 5292000.

The previous prime is 18683519. The next prime is 18683537. The reversal of 18683532 is 23538681.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18683537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37807 + ... + 38297.

Almost surely, 2^18683532 is an apocalyptic number.

18683532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18683532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27221376).

18683532 is an abundant number, since it is smaller than the sum of its proper divisors (35759220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18683532 is a wasteful number, since it uses less digits than its factorization.

18683532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659 (or 654 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 18683532 is about 4322.4451413523. The cubic root of 18683532 is about 265.3503471045.

The spelling of 18683532 in words is "eighteen million, six hundred eighty-three thousand, five hundred thirty-two".